How do I find the factor combinations of the number 510,700?
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers.
To find the factor combinations of the number 510,700, it is easier to work with a table - it's called factoring from the outside in.
Outside in Factoring
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
Why are the negative numbers included?
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 510,700.
Example:
1 x 510,700 = 510,700
and
-1 x -510,700 = 510,700
Notice both answers equal 510,700
With that explanation out of the way, let's continue. Next, we take the number 510,700 and divide it by 2:
510,700 ÷ 2 = 255,350
If the quotient is a whole number, then 2 and 255,350 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!
Here is what our table should look like at this step:
Now, we try dividing 510,700 by 3:
510,700 ÷ 3 = 170,233.3333
If the quotient is a whole number, then 3 and 170,233.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
Let's try dividing by 4:
510,700 ÷ 4 = 127,675
If the quotient is a whole number, then 4 and 127,675 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!
Here is what our table should look like at this step:
Keep dividing by the next highest number until you cannot divide anymore.
If you did it right, you will end up with this table:
More Examples
Here are some more numbers to try:
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